The Vapour Tech Tee-Shirt from Trekmates is more than just a tee-shirt. The fabric has an advanced treatment (Vapour Tech) that works hard to regulate your body temperature & help you perform in a wide range of climates & temperatures. The 100% polyester top will keep you warm in winter & cool in summer. Its quick drying & has very fast wicking qualities. It can be worn alone or as part of a layer system. The antibacterial treatment makes it perfect for active use & easy to maintain. It even offers high UV protection so its an ideal choice for the adventure traveller, or outdoor worker.